docs: def is_bin_subset(sub, sup) -> bool:
      """Check whether all bins in one binning are present also in another:
  
      Parameters
      ----------
      sub: array_like
          Candidate for the bin subset
      sup: array_like
          Candidate for the bin superset
      """
      sub = make_bin_array(sub)
      sup = make_bin_array(sup)
  
      for row in sub:
          if not (row == sup).all(axis=1).any():
              # TODO: Enable also approximate equality
              return False
      return True